that video is old and outdated...also that version was never released since i redesigned the entire setup....
then after the second version i wanted to try something a little different and created a complete new design (again)

you will notice V4 in the youtube video looks nothing like how it is today....

first problem is finding a DVD drive with a suitable laser, one that works fine at 400ohm - 600ohm on original discs...
then making sure it reads backups at about 200ohm - 300ohm
also must listen to how the drive spins and how the laser travels up and down to make sure the drive itself is hopefully free from any defect before modifying it.

So one of the most challenging aspects is finding a good DVD drive....
Then a WASP needs to be performance tested to make sure it is also 100% free of any possible defect.....

now that i have two (almost perfectly) working pieces of equipment i have to tear em down and begin modification...
soldering all the WASP components onto the Flex is no problem....
soldering the Flex to the drive board is no problem...

troubleshooting after everything is mounted is the tricky part....
you really only have one chance to mount the flexpcb to the DVD Drive board and hope it works on that first try....
if it doesnt work the first time then the problem could be anywhere (even having performed a 100% electrical connection check before and after assembly/modification)

v4 is a beast...i hate the work that needs to be put into making one, but the end result is a combination of hardware in harmony